# Classical 6j-symbols and the tetrahedron

@article{Roberts1998Classical6A, title={Classical 6j-symbols and the tetrahedron}, author={Justin Roberts}, journal={arXiv: Mathematical Physics}, year={1998} }

A classical 6j-symbol is a real number which can be associated to a labelling of the six edges of a tetrahedron by irreducible representations of SU(2). This abstract association is traditionally used simply to express the symmetry of the 6j-symbol, which is a purely algebraic object; however, it has a deeper geometric significance. Ponzano and Regge, expanding on work of Wigner, gave a striking (but unproved) asymptotic formula relating the value of the 6j-symbol, when the dimensions of the…

## 131 Citations

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